/*
 * Copyright (c) 2009 VMware, Inc.
 * Copyright (c) 2009 John Pritchard, WTKX Project Group
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package wtkx.wtk;


import wtkx.TextArea;
import wtkx.wtk.text.Document;

/**
 * Text area listener interface.
 *
 * @author gbrown
 */
public interface TextAreaListener {
    /**
     * Called when a text area's document has changed.
     *
     * @param textArea
     * @param previousDocument
     */
    public void documentChanged(TextArea textArea, Document previousDocument);

    /**
     * Called when a text area's editable state has changed.
     *
     * @param textArea
     */
    public void editableChanged(TextArea textArea);

    /**
     * Called when a text area's text key has changed.
     *
     * @param textArea
     * @param previousTextKey
     */
    public void textKeyChanged(TextArea textArea, String previousTextKey);
}
